Ernhard koechling



BERNHARD KOECHLlNG-,-O-F NEW YORK, N. Y.

Leiters Patent No. 62,4128, dated February/"ZG, IST.

IMPROVED FOLDING CHAIR.

itin Sammie nftmh in tu tigen httafs atnit mit mating part nt tige anni.

TO ALL WHOM'IT MAY CONCERN:

Be it known that I, B. KORG-Haino, of the city` county, and State of New York, have invented a new and useful improvement in Folding Chairs; andI do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this specification.

'.Ihis invention relates to an improvement in that class of chairs which are generally used for opera houses, theatres, and similar localities. The invention consists in the manner ot' lhanging the sent to the side frames, which is tiene in such a manner that, when any number of chairs are to be placed in a convex or concave line, the devices for 'attaching the seat will always answer as they are. In inost cases whore the chairs are not placed in a straight line, the holes which are bored through the side frames to receive the pin' on which the seat swings, must be arranged separately on each chair, to agree with the position of the same on the curved line. By the use of my improvement I can manufacture or cast any amount of side frames and seats, and all parts can be put together as they are, no matter if the chairs are to be placed into a straight or curved line. Provision is also made that the seats on myochair may he turned up or down at pleasure. In the accompanying drawings my invention is illustrated- Figure I being a pla-n or top view of two of mychairs.

Figure 2 is a vertical cross-section of a chair, the plane of section being indicated by line a: :11, iig. I.

Figures 3 and 4 are detaili/iews, showing the manner ci' attaching the back to the side frames, and will he hereinafter referred to.

Similar letters of reference indicate like parts.

The side frame-s A of the chair are each provided at their front extremities with a hole, a, through which a pin, l), on the gudgeon B passes. The gudgeons B are secured to the under sido of the seat C by means of screws, or in any other analogous manner. Each gudgrcon is, beside the pin b, provided with two triangular stop-pins, c c. These tit into a. circular mortise, d, which iscut into either side of the side frames A, said mortises being deeper around the circumference than at the centre; thus they are adapted to the shape of thepins e. (See tig. I.) In each mortise d areamrranged two triangular stops, c c', (iig. 2,) against which the stop-pins e strike when the seat is turned down or up. In the former case, that is, when the seat is turned down, one pin e will strike the upper surface of lthe stop e, while the other pin c strikes against the under side of stop e. Thus the seat is firmly held both in front and behind the pivoting point b. When the seat is turned up, one pin c strikes against the 4rear side of the stop e, while the other p in c touches the front surface of the stop e. The triangular stop-pins c c will always reach suiliciently far into the mortise, even when the chairs are set in a curve, and not in a straight line. The side pieces'A are made of cast iron, or other suitable material, and they are provided with grooves on each side to receive the backs D. Said backs are pressed, of wood or any other suitable material, and they are retained in position by'mctallic straps f, which pass through slotsg in the side pieces A, (as seen in tig. 4, which is a. sectional rear elevation of a portion of two backs 1),) which are secured to a side piece. '.lhcse slots are longer than the width of the straps, so that said straps are free to move up or down, and that the backs can readily accommodate themselves to the format-ion of the iioor. The strap j", at the end of a row of chairs, is diii`erent from lthose in the middle, being provided with a small hook, f", which catches over the outer edges of the slot, as shown in iig. 3, which is a horizontal sectional view of a back, D, attached to a side piece, A. By this arrangement, chairs for opera houses and other similar localities can be made easily, and can, withoutdilculty, be adapted to any horizontal as well as vertical deviations from a straight line.

What I claim as new, and desire to secure by Letters Patent, is-

1. I claim the arrangement 0f the stop-pins c c, which tit into the mortise d, as seen, and by which the seat C is supported both in rear and front of the pin b on which the scat is hung, substantially as herein shown and described.

2. I claim the strapsf, itted in oblong slots in the side pieces A, in combination with the backs D, substantially as and for the purpose herein shown and described.

BERNHARD KOEGHLING.

Witnesses:

WM. F. MCNAMARA, ALEX. F. ROBERTS. 

